本文全面论述IGCC系统设计优化的概念与方法。

This paper fully discusses conception and method of optimization of IGCC system.

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本文介绍特征技术产生的背景和特征建模的有关概念与方法。

This paper presents the generation background of feature technology and the related concepts and methods of feature modelling.

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一般系统论创立以来，其中很多概念与方法就一直存在争议。

Since the origination of General System Theory, many concepts and means have been arguing.

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